diff options
-rw-r--r-- | arm/DuplicateOpcodeHeuristic.ml | 25 |
1 files changed, 22 insertions, 3 deletions
diff --git a/arm/DuplicateOpcodeHeuristic.ml b/arm/DuplicateOpcodeHeuristic.ml index 85505245..9b6a6409 100644 --- a/arm/DuplicateOpcodeHeuristic.ml +++ b/arm/DuplicateOpcodeHeuristic.ml @@ -1,3 +1,22 @@ -exception HeuristicSucceeded - -let opcode_heuristic code cond ifso ifnot preferred = () +open Op +open Integers + +let opcode_heuristic code cond ifso ifnot is_loop_header = + match cond with + | Ccompimm (c, n) | Ccompuimm (c, n) -> if n == Integers.Int.zero then (match c with + | Clt | Cle -> Some false + | Cgt | Cge -> Some true + | _ -> None + ) else None + | Ccompf c | Ccompfs c -> (match c with + | Ceq -> Some false + | Cne -> Some true + | _ -> None + ) + | Cnotcompf c | Cnotcompfs c -> (match c with + | Ceq -> Some true + | Cne -> Some false + | _ -> None + ) + | _ -> None + |